Bewolking — 2025
| Maand | Zemst | Vilvoorde | Verschil |
|---|---|---|---|
| Jan | 78.4 % | 78.6 % | -0.2 |
| Feb | 70.2 % | 70.4 % | -0.2 |
| Mrt | 42.5 % | 43.3 % | -0.8 |
| Apr | 46.4 % | 45.9 % | +0.5 |
| Mei | 53.5 % | 53.4 % | +0.1 |
| Jun | 51.3 % | 52.2 % | -0.9 |
| Jul | 54.1 % | 53.3 % | +0.8 |
| Aug |
| 54.9 % |
| 55 % |
| -0.1 |
| Sep | 60 % | 60.7 % | -0.7 |
| Okt | 84.8 % | 84.7 % | +0.1 |
| Nov | 77.3 % | 77.6 % | -0.3 |
| Dec | 72.2 % | 72.5 % | -0.3 |